Fig. 3From: Mapping of a major QTL for salt tolerance of mature field-grown maize plants based on SNP markersFrequency distribution and correlation analysis of NPH, SPH and PHI traits across three seasons. Frequency distribution and correlation analysis were conducted using Graphpad Prism software (http://www.graphpad.com/). r indicates correlation coefficient. F represents PH4CV and M represents PH6WCBack to article page